quotum.rb

# == Schema Information
#
# Table name: quota
#
#  id          :integer          not null, primary key
#  campaign_id :integer
#  target      :integer          default("0")
#  completed   :integer          default("0")
#  parent_ids  :text             default("{}"), not null, is an Array
#  settings    :json             default("{}")
#  created_at  :datetime         not null
#  updated_at  :datetime         not null
#
# Indexes
#
#  index_quota_on_campaign_id  (campaign_id)
#  index_quota_on_completed    (completed)
#  index_quota_on_parent_ids   (parent_ids)
#  index_quota_on_target       (target)
#

class Quotum < ActiveRecord::Base

  belongs_to :campaign, inverse_of: :quota
  has_one :client, through: :campaign

  validates :campaign, presence: true

  scope :roots, -> { where(parent_ids: '{}') }

  class << self
    def update_completed_stats(stats)
      where(id: stats.keys).find_each do |quotum|
        quotum.update_attributes(completed: stats[quotum.id.to_s])
      end
    end

    handle_asynchronously :update_completed_stats
  end

  def children
    self.class.where('? = ANY(parent_ids)', id.to_s)
  end

  def parents
    self.class.where(id: parent_ids)
  end
end